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I've suffered with chondromalacia (runner's knee) pain for 15 years. This brace is the only thing that has kept me running. I'm going on my 4th or 5th pair now. Thanks so much RRS for carrying this great support.P.S. I'm 5'4" tall -- this brace fits me great.

Tore the meniscus in my left knee. Doctor said to keep running until it was shot and then surgery. Running with brace eliminated pain and allowed me to strengthen leg. Combined with anti-inflamatories, ice , and heat, I still have not had surgery 4 years later. Provides good flexibility and full motion while providing good support. It is hot in the summer though.

I hurt my knee skiing a couple of years ago and was reluctant to get on the slopes. Last year I tried the X-Factor knee brace and found it gave great support and, even with the constant knee bending envolved in skiing, was very comfortable.

At first I didn't think it would fit my knee...and the instructions aren't the greatest. But after I figured it out, it fit my very large knee. It feels great running because the support is so good and you still have freedom of motioin

Too small. Looks like a good brace but it does not fit my knee. One size fits all is not the case. The tabs barely make it around and I have the Velcro sticking my skin.Actually the manufacturer does make a larger size. Shame on you RRS for not giving your customers all the fit options, especially for an injury product like this.

I have no ACL or cartilage in my right knee. With bone to bone contact, I can no longer run, but with the X-Factor brace I can walk extensively, coach my sons baseball and soccer teams, and have avoided getting a new knee for 4 years now.

I use this to support my knee during workouts and runs due to reduced medial meniscus cartilidge. The extra large fits me, but slips some when I sweat and I have to reposition.

I got my wife the medium which fits her well after she started experiencing knee pain which was diagnosed as ligament strain. It helps with the support, but gets hot over time, so she also alternates with another knee brace she got from the doctor's office.

I think this would be an effective brace for people with larger legs than I. It only comes in two sizes: medium and XL. The medium is supposed to be a one-size-fits-all kind of brace, but it isn't. I ended up going with a CEP compression knee brace that fits and works superbly. I am a size two for CEP braces, which means my mid-thigh is around 17 inches around, and two inches below my calf is about 11 inches around. I am a small, but not insignificant, woman.

I do not recommend this product for most women, particularly for its sizing. I also found it to be bulky, difficult to maneuver in, and extremely sweaty because of the neoprene.

I was having awful pain in my knee after mile 3 or 4 prior to receiving the brace, once to the point I had to call home and get picked up. I went running after I received the brace and I could't believe the difference it made. The knee is hardly noticeable during my runs. The brace has been a godsend!

I just got this after my knee going out on me everytime I jump now I am able to jump without falling or my knee going out on me. I workout three times a day 6 days a week so I needed something to help my knee. I have also recommended this to friends and family the best on the market in my eyes.

I originally bought it for running, but it is too bulky and throws my stride off. It is however great while in the gym and during different exercises. IT keeps my patella in place and that is my weak point right now. I would love if someone was able to take this design and make it slimmer.

I had to give up high level competitive football (soccer) at 19 as I dislocated my knee over 10 times. At 30 I started paying in over 30's leagues, which are still pretty competitive. My doctor told me to wear a brace to stabilize and protect my knee. I chose this brace every time for a few reasons: easy to use, it doesn't restrict my motion, provides great support, and has an open back which makes it more comfortable and breathable than others. I used to have lots of pain on the morning after a game but haven't had that problem since using this brace. Thanks so much.

After an orthopedist said I might develop arthritic knees with daily 8-mile runs, I began wearing these braces. Three years later, my knees have not gotten worse, and they don't hurt. And I'm still running the same distance.

I have had knee pain while working out for 2 years. The very first day I wore the Pro-Tec Athletics X-Factor Knee Brace I had no pain. I ran 5 miles and even after the run I had no pain. It's light and durable enough to run long distances. I even have good lateral movement in tennis with the brace. I highly recommend this knee brace.

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1.

Ariadne Monfalcone rated this product
5 starsTue, August 11,2009:
I've suffered with chondromalacia (runner's knee) pain for 15 years. This brace is the only thing that has kept me running. I'm going on my 4th or 5th pair now. Thanks so much RRS for carrying this great support.
P.S. I'm 5'4" tall -- this brace fits me great.

2.

Steve rated this product
3 starsSun, January 04,2009:
Too small. Looks like a good brace but it does not fit my knee. One size fits all is not the case. The tabs barely make it around and I have the Velcro sticking my skin.
Actually the manufacturer does make a larger size. Shame on you RRS for not giving your customers all the fit options, especially for an injury product like this.

3.

Frank Gaglio rated this product
4 starsMon, December 01,2008:
I hurt my knee skiing a couple of years ago and was reluctant to get on the slopes. Last year I tried the X-Factor knee brace and found it gave great support and, even with the constant knee bending envolved in skiing, was very comfortable.

4.

Alan Bennett rated this product
4 starsTue, November 25,2008:
At first I didn't think it would fit my knee...and the instructions aren't the greatest. But after I figured it out, it fit my very large knee. It feels great running because the support is so good and you still have freedom of motioin

5.

Daniel rated this product
1 starWed, June 25,2008:
Only buy this if you have small knees. I'm 5'11" and 185lb, and I can't get it around my knee.

6.

Chuck Breuer rated this product
5 starsFri, August 24,2007:
I have no ACL or cartilage in my right knee. With bone to bone contact, I can no longer run, but with the X-Factor brace I can walk extensively, coach my sons baseball and soccer teams, and have avoided getting a new knee for 4 years now.

7.

Bruce Stebbins rated this product
4 starsSun, November 03,2002:
Tore the meniscus in my left knee. Doctor said to keep running until it was shot and then surgery. Running with brace eliminated pain and allowed me to strengthen leg. Combined with anti-inflamatories, ice , and heat, I still have not had surgery 4 years later. Provides good flexibility and full motion while providing good support. It is hot in the summer though.